[asterisk-users] Increase VoiceMail Messages Recording Gain - AudioCalls are Ok

[Shawn Kelley]

I had the same problem. 
Checking voicemail via the phone was perfectly normal but the email
attachments were so quiet we had to turn the computer volume all the way up
along with the speakers amps just to make the attachment understandable.
Then just wait until someone forgets to turn the volume back down and a
lovely windows message box pops up. Scares the (pick your word) out of
everyone in the office!

After much searching I found the solution:
In the voicemail.conf file change the order in which the recording formats
are specified. Asterisk will email the first format in the list.

My original line: format=wav49|wav|gsm
My new line: format=wav|wav49|gsm

NOTE: My understanding is that the wav files are much larger attachments
than the wav49 version. However, we haven’t noticed much difference, still
fairly small attachments. Definitely no problems on a LAN or Broadband
connection.


________________________________________
From: Marco Mouta [mailto:marco.mouta at gmail.com] 
Sent: Tuesday, October 10, 2006 2:18 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] Increase VoiceMail Messages Recording Gain -
AudioCalls are Ok

Hi all

I'm deploying a  VoiceMailserver with Asterisk behind a legacy pbx,
providing Voicemail to email services for Lecagy PBX extensions.
On busy or unanswered calls, Legacy pbx will dial a specific DID (one per
extension) to asterisk, and the call is handled by Voicemail application. 

I've several SIP extensions on this Asterisk box, and calls between Asterisk
extensions and legacy PBX are just fine, at least no complaining from users,
seems good to me:)

The problem is:
Right now, and i'm referring only to calls directly handled by VoiceMail
application, the users get their audio files in email but the audio is very
very low. 
I've thought about changing RX gain on PRI interface between legacy pbx and
asterisk, but until now no complaining with audio calls.

I'm afraid that changing this parameter to solve voicemail issues will get
me in troubles with Voice Calls . 

Any advice, or previous similar experience?

-- 
Best regards

Marco Mouta